Game Physics Cookbook

Circle to oriented rectangle

Testing if a point intersects an oriented rectangle involves moving the point into the local space of the oriented rectangle. Once in the oriented rectangle's local space, we treated the oriented rectangle as a non-oriented rectangle. Testing for intersection between a circle and an oriented rectangle works the same way. We move both the circle and oriented rectangle into the rectangle's local space, then perform a circle rectangle intersection test:

Getting ready

We are going to implement a test to see if a circle and oriented rectangle are intersecting. For the sake of convenience, we are also creating a #define macro ...